$NetBSD: patch-makeinclude.in,v 1.1 2019/10/18 10:40:40 micha Exp $

Add CPPFLAGS to CFLAGS and CXXFLAGS.

--- makeinclude.in.orig	2015-06-30 09:39:45.000000000 +0000
+++ makeinclude.in
@@ -16,10 +16,11 @@ CC	=@CC@
 MAKEDEPEND =@MAKEDEPEND@
 
 # flags for C++ compiler:
-CFLAGS		=@CFLAGS@
-CFLAGS_D	=@CFLAGS_D@
-CXXFLAGS	=@CXXFLAGS@
-CXXFLAGS_D	=@CXXFLAGS_D@
+CPPFLAGS	=@CPPFLAGS@
+CFLAGS		=@CFLAGS@ $(CPPFLAGS)
+CFLAGS_D	=@CFLAGS_D@ $(CPPFLAGS)
+CXXFLAGS	=@CXXFLAGS@ $(CPPFLAGS)
+CXXFLAGS_D	=@CXXFLAGS_D@ $(CPPFLAGS)
 
 # libraries to link with:
 LDLIBS	=@LIBS@ -lX11 -lXext @X_EXTRA_LIBS@ -lm